Fig. 1From: Preparation of a new coating of graphene oxide/nickel complex on a nickelized metal surface for direct immersion solid phase microextraction of some polycyclic aromatic hydrocarbonsFE-SEM micrographs of the A Alu-SPME (×50,000), B chemically etched Alu-SPME (×100,000), C Alu-Ni-SPME (×25,000) and D Alu-Ni/GO/NiTAM-SPME (×25,000) fibersBack to article page